Observation information
- date-obs: 2025-04-06
- time-obs: 17:08:56.889600000
- date-end: 2025-04-06
- time-end: 19:09:12.867800000
- obs_id: A13_090T01_9000006458
- exposure: 4478.61226845
- sourceid: 4U 1755-338
- observer: arbind2196
- ra_pnt: 269.6667
- dec_pnt: -33.8075
Basic statistics of files
Param |
Original file |
Final file |
Filename | modeM0/AS1A13_090T01_9000006458_51512cztM0_level2.fits
| modeM0/AS1A13_090T01_9000006458_51512cztM0_level2_quad_clean.evt
|
Size (bytes) | 571,155,840 | 87,739,200 |
Size | 544.7 MB
| 83.7 MB
|
Events in quadrant A | 4,889,783 | 588,003 |
Events in quadrant B | 3,826,125 | 653,678 |
Events in quadrant C | 3,800,250 | 581,687 |
Events in quadrant D | 8,126,886 | 384,798 |
Level1 data integrity
Mode M0 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 18903 | 1 |
B | 0 | 15756 | 1 |
C | 0 | 15676 | 1 |
D | 0 | 28697 | 1 |
Mode M9 |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 8 | 0 |
B | 0 | 8 | 0 |
C | 0 | 8 | 0 |
D | 0 | 8 | 0 |
Mode SS |
Quadrant | BADHDUFLAG | Total packets | Discarded packets |
---|
A | 0 | 130 | 0 |
B | 0 | 130 | 0 |
C | 0 | 130 | 0 |
D | 0 | 130 | 0 |
Data saturation
Quadrant | Total seconds | Saturated seconds | Saturation percentage |
---|
A | 6431 | 371 | 5.768932% |
B | 6430 | 158 | 2.457232% |
C | 6430 | 124 | 1.928460% |
D | 6431 | 2043 | 31.767999% |
Noise dominated fraction
Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.
Quadrant |
# 1 sec bins |
Bins with >0 counts |
Bins with >2000 counts |
High rate bins dominated by noise |
Noise dominated (total time) |
Noise dominated (detector-on time) |
Marked lightcurve |
A | 7216 | 6432 | 215 | 215 | 2.98% | 3.34% |  |
B | 7215 | 6431 | 21 | 21 | 0.29% | 0.33% |  |
C | 7215 | 6431 | 87 | 87 | 1.21% | 1.35% |  |
D | 7216 | 6432 | 2002 | 2002 | 27.74% | 31.13% |  |
Top noisy pixels
Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1
Pixel properties |
Quadrant properties |
Quadrant |
DetID |
PixID |
Counts |
Sigma |
Mean |
Median |
Sigma |
A | 12 | 3 | 537482 | 3207.85 | 683 | 667 | 167.3 |
A | 8 | 43 | 244958 | 1459.81 | 683 | 667 | 167.3 |
A | 7 | 235 | 243483 | 1451.0 | 683 | 667 | 167.3 |
B | 15 | 52 | 299832 | 2015.57 | 691 | 669 | 148.4 |
B | 2 | 208 | 117380 | 786.33 | 691 | 669 | 148.4 |
B | 8 | 128 | 104781 | 701.44 | 691 | 669 | 148.4 |
C | 15 | 1 | 301446 | 1614.57 | 676 | 670 | 186.3 |
C | 12 | 252 | 249342 | 1334.88 | 676 | 670 | 186.3 |
C | 13 | 3 | 211260 | 1130.45 | 676 | 670 | 186.3 |
D | 8 | 176 | 4555640 | 27883.45 | 580 | 560 | 163.4 |
D | 6 | 228 | 475040 | 2904.48 | 580 | 560 | 163.4 |
D | 8 | 192 | 255956 | 1563.38 | 580 | 560 | 163.4 |
Detector plane histogram (DPH)
Histogram calculated using DETX and DETY for each event in the final _common_clean file
Quadrant A |
 |
 |
Quadrant B |
Quadrant D |
 |
 |
Quadrant C |
Count rate plots and images
Plot type |
Count rate plots |
Images |
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data. |
 |
 |
Quadrant-wise count rates
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins |
 |
 |
Housekeeping plots
Parameter |
Plot |
CZT HV Monitor |  |
D_VDD |  |
Temperature 1 |  |
Veto HV Monitor |  |
Veto LLD |  |
Alpha Counter |  |
_CPM_Rate |  |
CZT Counter |  |
+2.5 Volts monitor |  |
+5 Volts monitor |  |
_ROLL_ROT |  |
_Roll_DEC |  |
_Roll_RA |  |
Veto Counter |  |